Question

A man, after making the first investment, earned a total

Q: Answer-A man, after making the first investment, earned a total interest of Rs. 1,09,200 at the end of 3 ye...

Let the amount invested at compound interest be Rs. y and the amount invested at simple interest be Rs. 5x So, amount invested at 923 p.a. simple interest 5x X 0.4 Rs. 2x And, amount invested at 20 p.a. simple interest 5x X 0.6 Rs. 3x ATQ 2x X 923 X 3100 3x X 20 X 3100 y X 1.23 - 1 109200 Or, 46x25 9x5 0.728y 109200 Or, 46x 45x 0.728y X 25 109200 X 25 Or, 91x 18.2y 109200 X 25 Or, 5x y 6000 X 25 So, 5x y 150000 So, interest the man wouldve earned had he invested the whole amount at 40 simple interest 150000 X 40 X 3100 Rs. 1,80,000 So required profit 180000 - 109200 Rs. 70,800

interest of Rs. 1,09,200 at the end of 3 years. He invested a certain amount at an annual compound interest rate of 20%. At the same time, he invested another sum in two different parts in a scheme. In this scheme, he allocated 40% of the total amount to earn interest at a simple interest rate of (92/3)% per annum, while the remaining portion was invested at a simple interest rate of 20% per annum. Now, if the man had invested the entire amount in a simple interest scheme at a rate of 40% per annum for the same 3-year period, how much more interest would he have earned?

A Rs. 75,800

B Rs. 70,000

C Rs. 70,800

D Rs. 70,850

E Rs. 80,850

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